28 NOTES
Advanced Platform Development
Rebuilding a complete self-hosted data platform from FOSS on Kubernetes, one working component at a time.
→ Start hereDon't Pay to Host Your Hobby
fewbottles.com is GitHub Pages, Cloudflare, four JSON files, and a bitmask in localStorage
→ Read this noteLatest note · folio diagram
flowchart LR
Phone["Phone / browser"]
CF["Cloudflare<br/>DNS, TLS, CDN"]
GH["GitHub Pages<br/>origin"]
LS[("localStorage")]
JSON["data/*.json"]
Phone -->|"fewbottles.com"| CF
CF --> GH
GH --> JSON
Phone --> LS
fewbottles.com is a working cocktail app that costs me a domain name and nothing else. GitHub Pages is the origin. Cloudflare is the front door. The only state that matters lives in the phone that opened the page. I do …
Current Series
20 NOTES
MCP Without the SDK
The Model Context Protocol taken apart one JSON message at a time, written by hand in Go.
→ Start here
5 NOTES
MCP Studies
Measured studies of MCP agent behavior: knowledge-layer ablation, stored-knowledge use, the measurement harness, knowledge pollution, and cross-reference document completion.
→ Start here
5 NOTES
AI on a Leash
Mechanical verification for AI-written code: strict linting, coverage gates, mutation testing, and a pre-commit gate that refuses the commit.
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Recent Notes
151
Plexara: A Managed MCP Layer for Data Platforms
Deasil operates the endpoint. The engine is txn2/mcp-data-platform, Apache-2.0. I wrote the harness this replaced.
2026-09-10
150Don't Impersonate the Caller. Put the Credential on the Connection.
Trino, S3, DataHub, and vendor APIs do not share an identity model. They all have a credential.
2026-09-03
149OAuth in Front of Keycloak
Pre-registered clients and PKCE. Login stays in the IdP.
2026-09-01
148REST APIs for Agents
Index the OpenAPI document. Search across catalogs. Then call one operation.
2026-08-30
147Sessions Left the Protocol. Put the Handle in the Argument.
platform_info mints dps_…; the model threads it. Go SDK v1.7.0, MCP 2026-07-28.
2026-08-28
146Don't Ingest the CSV. Point Hive at It.
Hive still maps a table name to a directory of files
2026-08-26
145Don't Sandbox Python. Embed Starlark.
starlark-go in a Go server: FileOptions, host bindings, and a cancel watchdog
2026-08-24
144God Packages and Other Slow Failures
Structural ratchets for AI-assisted Go, six months into make verify
2026-08-22